Home / 639,330.40-958,829.10-189,945.64

Finding the Fourth Proportional to 639,330.40, 958,829.10 and 189,945.64

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Solution

The fourth proportional to 639,330.40, 958,829.10 and 189,945.64 is: 284,868.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,330.40 : 958,829.10 = 189,945.64 : x
  2. Step 2: Convert to fraction form
    639,330.40/958,829.10 = 189,945.64/x
  3. Step 3: Cross multiply
    639,330.40x = 958,829.10 × 189,945.64
  4. Step 4: Simplify right side
    639,330.40x = 182,125,407,050.12
  5. Step 5: Solve for x
    x = 182,125,407,050.12/639,330.40
  6. Step 6: Final answer
    x = 284,868.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.